Biodiversity signature of the Last Glacial Maximum at South Georgia, Southern Ocean

High‐latitude biodiversity distributions can preserve signals of the timing and geography of past glaciations, and as such ground truth ice‐sheet models. Discrete polar archipelagos offer the fewest confounding factors for testing historic ice position records in extant biodiversity. At South Georgia, two competing geological hypotheses suggest that either the Last Glacial Maximum (LGM) ice was extensive, nearly covering the continental shelf (H1 Big ice) or restricted to the inner fjords (H2 Little ice). We examined the past configuration of the South Georgia ice cap using seabed biodiversity.

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